/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.apache.causeway.core.runtime.flushmgmt;


import lombok.experimental.UtilityClass;

@UtilityClass
public class FlushMgmt {

    private static final ThreadLocal<Boolean> autoFlushSuppressed = ThreadLocal.withInitial(() -> false);
    public static boolean isAutoFlushSuppressed() {
        return autoFlushSuppressed.get();
    }
    public static void suppressAutoFlush(final Runnable runnable) {
        final boolean onEntry = autoFlushSuppressed.get();
        try {
            autoFlushSuppressed.set(true);
            runnable.run();
        } finally {
            if(onEntry) {
                // perhaps superfluous but just in case
                autoFlushSuppressed.set(true);
            } else {
                autoFlushSuppressed.remove();
            }
        }
    }

}
